fix: instantly consume msg que when calling recursively
Merge branch 'dev' of github.com:polygonal/core into dev
es

fix: don't process entity twice if entity.skipSubtree flag is set
es

find a better way for storing properties
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childExists(): skip cl parameter
es

 fix stop message propagation in both directions
max. message type is 0x7fff
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minor
es

instantly free entities; don't mark them for deferred removal
minor
ClassTools

createObject -> createInstanceOfClassName
Mean, Median

use value property instead
remove obsolete screen package